IAR-KSK-IMX25 Freescale Semiconductor, IAR-KSK-IMX25 Datasheet - Page 122

• Manufacturer Part Number: IAR-KSK-IMX25
• Description: KIT DEVELOPMENT I.MX257, ARM926
• Manufacturer: Freescale Semiconductor
• Series: i.MX25r
• Type: MCUr

Specifications of IAR-KSK-IMX25

• Contents: Board, Cables, CD, Debugger, Power Supply
• Processor To Be Evaluated: I.MX257
• Processor Series: i.MX25
• Data Bus Width: 16 bit
• Interface Type: UART, JTAG, USB, Ethernet, SD/MMC
• Core: ARM926EJ-S
• Silicon Manufacturer: Freescale
• Core Architecture: ARM
• Core Sub-architecture: ARM9
• Silicon Core Number: I.MX2
• Silicon Family Name: I.MX25
• Mcu Supported Families: I.MX25
• For Use With/related Products: i.MX25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.7.20.1.4
Table 96
Figure 95
122
US26
US27
US28
US29
No.
Transmit
USB_SE0_VM
USB_DAT_VP
USB_TXOE_B
USB_TXOE_B
USB_SE0_VM
USB_DAT_VP
USB_VM1
USB_RCV
USB_VP1
defines the signals for USB in VP_VM unidirectional mode.
shows the USB transmit waveform in VP_VM unidirectional mode diagram.
Name
Table 95. USB Port Timing Specifications in VP_VM Bidirectional Mode (continued)
VP_VM Unidirectional Mode Timing
Rx rise/fall time
Rx rise/fall time
Parameter
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 8
Rx skew
Rx skew
Figure 95. USB Transmit Waveform in VP_VM Unidirectional Mode
Table 96. Signal Definitions for USB VP_VM Unidirectional Mode
US33
Direction
USB_SE0_VM
USB_DAT_VP
USB_DAT_VP
Out
Out
Out
Signal Name
In
In
In
USB_RCV
Transmit enable, active low
Tx VP data when USB_TXOE_B is low
Tx VM data when USB_TXOE_B is low
Differential Rx data
Rx VP data when USB_TXOE_B is high
Rx VM data when USB_TXOE_B is high
Direction
Out
Out
US30
In
In
US34
Min.
–6.0
–4.0
—
—
US32
Signal Description
Max.
+2.0
+4.0
3.0
3.0
Unit
ns
ns
ns
ns
Freescale Semiconductor
US31
Reference Signal
USB_SE0_VM
USB_DAT_VP
Condition/
35 pF
35 pF